Jump Ninja

Jump Ninja has one move: charge up a jump, then let go to leap. You play a ninja hopping upward, and the controls are kept deliberately small. A run comes down to judging how much power each gap or ledge needs and timing every hop on the way up.

The creator is a parent who found that complex games had become a chore, and says the goal was a game anyone can play at any time, on any device. It was assembled in Lovable, and Three.js does the rendering.

That is why it runs on phones and other devices as well as desktop: it is meant to be picked up quickly for a short session, wherever you are. A single charged jump is all there is to learn, and the rest is judgment.